Machine for making paper tubes



EilecLMarch 17. 1921 v 12 Sheets-Sheet 1 Wm llillll arm n64;

Aug. 142, 1923.

R. L. BOWMAN ET AL MACHINE FOR MAKING PAPER TUBES Filed March 1'7 F 1921 12 Sheets-Sheet 2 Aug. 14,1923.

R. L. BOWMAN ET AL MACHINE FOR MAKING PAPER TUBES .Fiied March 17. 1921 l2 sheets sheet 5 y?" awe/Mow WWI/ Aug. 14,1923. 11,464,968

R. L. BOWMAN ET AL MACHINE FOR MAKING PAPER TUBES Filed March 17. 1921 12 Sheets-Sheet 4 Aug. M, 11%23.

R. 1.. BOWMAN ET AL MACHINE FOR MAKING PAPER TUBES @wyzaw 3 11,464,968 R. L. BOWMAN ET AL MACHINE FOR MAKING PAPER TUBES m R \M 7, Q m QN SQN M m & m 4 M xx b k x niflw. HHHHHH W \k gwuewtoz Aug. 14, 1922 3.

R. L. BOWMAN ET AL.

MACHINE FOR MAKING PAPER TUBES Filed March 17. 1921 12 Sheets-Sheet 7 J a gwue'aioz G ad eu veg R L BOWMAN ET AL MACHINE FOR MAKING PAPER TUBES Filed March 17. 1921 12 Sheets-Sheet 8 Aug. 14, 1923. 1,464,968

R. L. BOWMAN ET AL momma FOR MAKING PAPER TUBES Filed March 1'7. 192]. 12 Sheets-Sheet 9 0 gvwentoz 1 Aug. 14, 1923. 1,464,968

R. L. BOWMAN ET AL MACHINE FOR MAKING PAPER TUBES Filed March 17. 1921 12 Sheets-Sheet 11 Aug. 14, 1923. HA64L968 R. L. BOWMAN ET AL MACHINE FOR MAKING PAPER TUBES Filed March 17. 1921' 12 Sheets-Sheet 12 Patented Aug. 14, 1923.

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OB T L. BOWMAN, or KNOXVILLE, TENNESSEE, AND GEORGE a. PENN, or wasnn rero1\T, nrsrnrcr or COLUMBIA, nssrsuoas T0 'sAIn ROBERT L. BOWMAN.

IVIACHINE FOR MAKING PAPER TUZ B ES.

Application filed Marchlf, 1921. Serial No. 452,999.

To all. whom it mac/concern Be it known that, we, ROBERT L. BOWMAN,

a citizenflof the'United States, residing at:

Knoxville, in the county of iinoxmandstate of Tennesse, and GEORGE R. PENN, a citizen of the United. States, residing at Washing' ton, in the District of Columbia, have invented a new and useful Machine for Making Paper Tubes, of which the following is a specification. r

This invention relates toa machine for making paper tubes andis primarily designed for makingadjustable tubes to be used in'the formation of blasting cartridges although it is'to be understood thatthe machine can also be employed for making tubes for various othe'r'purposes such as those to be used in packaging materials, in making-paper bags, and the like. I

One of the objects of the invention is to provide a machinethrough which aweb of paper can be pulled continuously, this paper during such movementbeing given the proper folds to produce a tube of'the desired cross sectional configuration.

Another obj e'ct'is to provide means Whereby the paper tubes can be cut to predetermined lengths, that portion of. the tube in each length being-folded automatically so as to be delivered fromfthemachine in package'form and ina predeterminedlength.

A still further object is toprovide a machine =which can operate at a high speed and which Ehas interchangeableformers whereby the transverse configuration of the tube produced can be varied at will both as tosize and shape.

With the foregoing and other objects in view which :will appear as the description proceeds, the invention resideslin the com bination and arrangement of parts and in the details of construction hereinafter described and claimed, ltbeing understood that, within the scope of what is claimed, changes in"the precise embodiment of' the invention' shown can bemade without'f 'de partinglfrom. the spirit of the invention. I i In the: accompanying drawings the pre ferred form of the invention has beenshown.

Figure 7.

In said drawings-1 Figure 1 is a plan view of the finishing unit of the machine.

Figure 2 is a side elevation thereof.

F lgure 3 is a plan View ofthe intermediate. unit of the machine.

Figure 4 is a side'elevation thereof. t Figure 5 is a plan View of the feeding unit of the machine.

Figure 6 is a side elevation thereof.

Figure 7 is an elevation of the initial former extending from and forming a part of the feeding unit, said figure illustrating. that side of the former opposite to the one shown in Figure 6.

Figure 8 is a section on line 8-8, Figure 1. V i

Fgure 9 is a section on line 9-9, Figure 1.

Figure 10 is a section on line 10-10, Figure 9. i 1

Fig. 11 is an enlarged section on line 11-11, Figure 7.

Figure 12 is an enlarged section on line 12-12, Figure 7..

Figure 13 is a section on line 13-13, Figure 7.

Figure 14. is a section on line 14-14,

Figure 15 is a section on line 15-15, Figure 7. J

Figure'l6 is a section on line 16-16, F igure 3.

Figure 17 is a section on line 17-17, Figure 3. i

Figure 18 is a section on line 18-18, Figure 3.

Figure 19 is a section on line 19-19, ig

a section on line 2-24,

; ure 1.

V Figure 30.

Figure 32 is a section on line 3232, Figure 8. V

Figure 33 is a plan view of the lower former mounted on the intermediate unit shown in Figure 3.

Figure 34 is a bottom plan view of the upper former used-in connection with the former shown in Figure 33. V

Figure 34 is a perspective view of a portion of'a paper tube.

Figure 35, is a perspective view of a portion of a paper tube showing several folds.

Figures-3'6 to 43 inclusive are sectional views more or less in diagram showing the successive steps followed in the formation of the zigzag folds in the tube.

The machine constituting this invention is preferably made up of three distinct units adapted to be assembled in line to form the complete machine. The first of these units to be considered in tracing -the course of the paper from one end of the machine to the other is the feeding unit illustrated in Figures 5, 6,7, and 11 to 15 inclusive. This unit includes a table 35 mounted on suitable supports. 36 and carrying a rotatable disk 37 and spindle 38 on which is to be placed the roll of paper, indicated at P. A bracket 39 is secured on the table 35 at one end and has an upstanding-spindle 40 adjacent which are upstanding guides 41 and 4-2. The guide 42 is in the form ofa roller or sleeve whereby friction on the paper web is materially reduced. as will be hereinafter explained; Pivotally 'mounted on the spindle 40 is a sleeve 43 provided at one end of a forming plate 144. At its point of connection with the sleeve 43 the plate is flat from top to bottom, as shown especially in Figure 11 and has its upper and lower edges turned;

toward each other to provide flanges'45. A guide plate 46 is arranged parallel with the flat end portion of the foriner44 and is held in place by the inturned flanges 45, there being sufficient space between the former 44 and the plate 46 to receive the. paperweb to be shaped. 'The guide plate 46 is extended beyond the adjacent ends of the flanges 45 as shown in Figure 7 and has the upper and lower corner portions of the extended part bent laterally toprovide wings 47'.

The former 44 is bulged laterally between the flanges 45, this bulging gradually increasing as will be seen by referring to Figures 12, 13 and 14 and continuing until the former iscompletely folded together along a longitudinal line as illustrated in Figure 15 with the upper flanged" edge of the former extending laterally slightly beyond the lower flanged edge. Thus it will be seen that a web of paper passing from the roll shown in Figure 5, will enter between the guides 41 and 42 and will then pass between the former 44 and the guide plate 46 at which point the paper web will be perfectly flat. As the web moves along the former, however, it will assume the contour of the convex surface'of the former so that as the web passes from the former adjacent the point illustrated in Figure 15 it will be completely folded longitudinally with one longitudinal edge seated in the channel formed under the upper flange 45 and the other longitudinal edge seated in the channel formed by the lower longitudt nal flange 45, the upper edge of the web obviously projecting laterally a short distance beyond the lower edge of the paper web.

The second unit to be considered and which constitutes the intermediate unit of the machine has been illustrated in Figures 3, 4, 16 to 20 inclusive, and Figures 33 and 34. This unit, which is placed in line with the unit h'ereinbeforedescribed, includes a 7 table 46 provided with a 'suitablesupporting frame 47. One end of the table sup ports the folded or delivery end of the former 44, the flanged edges of this former being held on the table by an adjustable clamp 48 shown particularly in igures 3 and 15. An opening 49 is formed in the top of the table 46- 'above a removable pan 50 or other container-for holding glue and extending transversely across this opening is a plate 5-1 on which is mounted the inter mediate portion of a lower former 52 shown in detail in Figure This form'er is i-n the form of an elongated metal strip extending longitudinally of the table and over the opening 49 and having its ends secured to the table by means of fastening devices 53 extending through laterally projecting terminal ears'54. That side of the of and the remaining portion of said edge of the former is extended istraight' for a predetermined distance, .'-as illustrated at 58 and cut away longitudinally as shown at 59.

IOU

former 52 which is substantially in line with the intermediate foldofthe former'44 has an overhanging longitudinal'flange 55 egees 1 i 3 Arranged abovefthe lower former 52 is V an.upper.fornier 60sliownin detail 'iinFigedge 61 v-The receiving end of the former': 60 has a latera1ly .eXte11cling tongue63 and or recess 62canfbe provided in the straight this tongue, as well as the.endgportion of the former is turned upwardly to provide a deflector6&Zwhich, as shown in Figure 16, extends laterally beyond the two formers52 and 60, A longitudinal flange 65 of substantially the same length as the flange 57 is inturned along-the iormer 60 and bears downwardly on the flange5'7 assholwn in Figure 7 16, the flange 65, however, projecting laterally a short" distance beyond the flange 57. The flange 65 terminates at one end close to the tongue 63 and at its other end at anotch 66 which. is cut into the former 6O. Another flange 67 is provided-betweenthe notch 66 and the delivering end of the tormerGO." As

shown in Figures 18, 19 and '20 this flange 67'is supported-laterally beyond the adjacent'edge of the former 52 and is curved transversely to produce a fold in a paper web drawn between the former and which web has been indicatedat P inFigures 18,

19 and20. Thus when the folded web is delivered to the intermediate unit from the former 44' the'edgeportions of the web will be received within the cha'nnels formed by r the flanges 57 and as illustratedin Figure 16. 'The upper'edge, as before explained; projects laterally beyond the lower edge of V the folded web fl and when it'passe's froni over the flange 65 it will be momentarily eX- posed beyond the straight edge 58 "and under thenotch 66. Said projecting edge of the web will then pass over the fiange67 which,

by reason of its peculiar transverseconfiguration as illustrated in Figures 18, :19 20 will "gradually turnthe upper projectingedge ofthe web downwardly'an'd inwardly so that it will come under the other edge ofthe paper web as illustrated particularly in Figure 20'. J

If it is desired to glue the lapping edges of the paper web together when brought to the position illustrated in "Figure: 20, the projecting edgepot the web,- while passing 'underthe notch'66 can come intoen'gage ment with a wheel or disk 68 which projects 4 into the pan 50 and is supported by a transverse 'shai't 69. A presser roller 7 Ojc'an be supported above the disk 68by a spring arm '71 secured to the platev 51- and this roller .70

will serve to press the projecting edge of the paperwebdownwardly on the disk 68 so as r to cause the disk to rotate as 'the web is drawn through the machineand thus apply gluetgthe projecting. edge: 'It has been found that under some conditions it is not necessary to. use the roller 7 O in order to ins'u're proper contact oft-he edge ofthe paper.

as the ,foldedpaper web is. drawn between theplatef72 and the "roller 74 it will drag over the shoulder 7 3 and thus compress the web along the folds thereof so as to produce scores along the folds.

A supplemental pan or container 75 may besupported at the delivery'end of the table i6 ancl disks or wheels 76 can-be extended thereinto. These wheels or disks project into the container and are adapted to engage the opposed edge portions of the folded web, thus to apply glue thereto if so desired.

I The third unit of" the machine to which the paper web is fed during its passage through the machine has been illustrated in 'Figures 1, 2, 8, 9, l0, and 21 to 32 inclusive;

This unit includes a table '7 7 mounted on a suitable supporting structure 78 and adapted to be placed in line with the table 46 of the intermediate unit. Secured on the re; ceiving end portion of this table 77 is a cross strip 79 on which is mounted a former consisting of an elongated strip 80. That portion of this former strip 80-projecting from the cross strip 79 toward theinternie diate unit is inclined downwardly toward said intermediate unit, as shown at 81 and is provided along its sides with inturned flanges 82 forming channels for the reception of the creased sides or edges of the Hat tube'already formed from the folded paper web.-

a same are found to be desirable; This former strip is provided with side flanges 84 which extend "from points adjacent the cross strip 79 to points back from that end oft-he strip remote from said cross strip 79.{ As shown particularly in Figure 21 that portion of the former strip 80' adjacent the cross strip 79 is fiat'and'has itsside flanges extending thereover, The former strip is grad: ually bulged upwardly as shown in Figures 22 and 23 sothat the flanges 84. are ultimately bro'ught to upwardly extending positions with the bowed portion of the former strip 80 extending upwardlytherebetween.

From the point indicated by line 23-23 and shown in Figure 23, the former strip 80' gradually merges into a rectangular shape as illustrated in Figure 25 -wherein the flanges 84 and the adjacent portions of the strip 80 are extended downwardly 'perpendicnlarly to the intermediate portion of the strip.

The flangesterminate just beyond this point, as shown in Figures 1 and 2.

=1The former. plate orstrip 80 is provided withlanrextension' 85 which can be integral with:the strip 80.-or, as. shown in Figures 9- 'and' 10, can be made separate therefrom, the. said strip 80 and;e:-:tens1on 85-lapp1ng and thereheinginturned earsStJ upon. the strip 80 which extend under the extension so as to hold theparts assembled. The extension 85 isof a width. substantially equal to the distance between thesides of the channel 87 formed under the end portions of the strip 80, as shown, iii-Figure and formed along one edge of this extension is a depending flange-88 which gradually turns inwardly under the extension as shown in Figurcspti,

27 and 28 and in Figure 10. A support 89 is located on the table 77 adjacent the delivery end of theertensiou and mounted on this support is a guide plate 90 which extends underthe flange 88 and has flange 91 which is gradually curved from an upstanding position as shown in Figure laterally-to position between the flung f extension 85 until it assumes achanneled flange 88, as shown in Figure 28.

shape spaced from but interlocking with the This plate 90' can be adjusted laterally relative to the support 89 as will be apparent by reterring to Figure 27 wherein a slot is shown in the plate for the reception ota clamping screw 93. j

St-andards 9-iare mounted on the table 77 onthe upper former 96 so that the same can be readily swung upwardly out of position astride the lower former strip 80.

As shown in the drawings those ends of the flanges 97 at the receiving end of the upper former 96 are, curved laterally to constitute deflectors 99.

1 1 30st 100 is mounted ad acent one side otthe extension 85jand has a block 101adj ustably mountedthereon. This block carries a spring finger 102 supported above the extension 85'and terminating in a yoke 103 which straddles the flanged side of the extension 85 so as to torm a pleater. An other post 10st is mounted on the table at the opposite side of the extension 85 and carries .an adjustably mounted block 105 in which is mounted a spring finger 106. This finger is extended above and along the extension 85, and terminatesin a yoke 107 which straddles the adjacent sideportion of the extension 85 close tothe free end thereof.

A transversely extendinglroller 108 is lo- It will be apparent that when the. fiat paper tube is drawn along the formers carca ted adjacent andbeyond the free end of the'extension 85; 7 s

riedjby the unit-shown inFiguresl and 2 the folded portions or edges of the fiat tube 'will be received under the flanges 82 and then guided underthe flanges; 8st. The flat tube will then-be-bowed transversely by the bowed portion of the former sothat the, folded sidesoredges of the tube will be turned downwardly bynthe flanges 84c and j ultimately be brought to upstanding positlOllSWltllln the channels formed along the flanges 8% and between the flanges 97 of the top former 96-., This will be apparent by, During xthe ;con-. tinued movement of the tube along the 4 J3, .TZ' 7 ieieiiing to. Figure 20.

formers one of thetdownturned side portions V of the tube will travel along the outer side of thefiange88 and be brought against the pleater yol-fe103 wniclrwill turn the lower part of said downturne'd' portion inwardly under the flange 88 and to'posltion to enter the space above the" guide plate and the flange 88 shown in Figure 26. The further to ward movement o'f'the tube will result in this edge portion of the tube being bent or folded inwardly.

tube the other downwardly projecting side of the tube will pass over the pleat-ingyolre 107 which will turn said edge inwardly under the extension 85; Thusas the tube leaves the extension85 it will have one side portion folded inwardly and the other side portion shaped into adouble fold, the re sultant' tube being such as illustrated ;in'

Figure 34:.

its the formed tuberleaves the extension 85 it passes over the roller 108 which thus serves to'condense or crease the tube along the several folds after which the tube passes between superposed pressure rolls109 car,- ried by standards 110. V Secured to the shaft111 01 one of the rolls 109 is a sprocket 112 adapted to receive motion through a. chain 113 from a sorocket 11 lsecured to the shaft 115 01"- one of pairof superposed pressure rollers 116.

These rollers are supported between standards 117 and are spaced from and parallel with the rolls 109. Another sprocket 118 is secured to the shaft 115 and is 'designed to receive motion through a chain 119 from a sprocket 'While a double told is 7 thus being made along one side of the fiat 120 secured to a transverse shaft 121. 'Ahelt wheel 122 is secured to the shaft 121 and re-V ceives motion through a belt 128 tronia motor12l or other source of power. 7

' Secured to the shaft 121 is a sprocket 125 adapted to transmit mot-ion through a chain- 126 to a sprocket 127 secured to a transverse shatt128 journaled' in one side portion of l the table 77: at theidelivery end thereof. Collars 129 are secured tothis shaft128 and sprocket. is resisted. .to aipredeterrnined ex? have springs 130 extending therefrom for forcing washers 131 orithe like against the ends of the hub 132 of a1 sprocket133. This sprocket is'loosely mountedi on. shaft 128 and rotates therewith under normal conditions. WVhen, however. the. rotation of the tent, the. shaft 128 will rotate independently of the sprocket-by reason of the slip con nection between thehub 132:.and the washers 1A chain 134' transmits motion is journa-led in suitable bearings .138 pro .yided therefor andnits roll 137 is located under and cooperates with another creasing roll 139;: Eac-hrof thesearlollsl37 and 139.

has azlongitudinal rib 1:10am a longitudie nal g1'oove-1.lt1,the parts heings Pl'Oportionedc-that; duringthe rotation of the rolls in opposite directions; theribs 140 will ipro- 'ject into the grooves leljso that the folded paper tube Lwhile passingbetween andbelngrv pressed by the rollsj137 and 139 will be creasedtransversely in foppos'ite side'sfrespectively by these ribsenteringthe grooyes. The parts are proportioned to crease the tube at regular intervals, the distances be tween the creases :being preferably ofa standard length. As-shown'in Figure 2the rolls 137 and139 are provided with gears 1 12 and 143 to insure the rotation of the rolls in. properly timedrelation... The upper roll 14-9 is preferably mounted in s pring pressed bearings 14-4- (see Figures 2 and 8} so as to insure the'properdegree of pressure upon thelfolded tube bythe rolls' lllounted on the table 77 between U18 creas ing rolls 13-7 and 139 'and'the-adjacent end of the tahleiis an upstanding guide} frame" 1415 haying-channels 146 in. the sides thereof for. the reception of anti-frictionballs 147.

r or the like. These balls are seated within reciproeation and which frameis located close to the creasing rolls and 139 and extends substantially throughout .theclength of the has a vled ge llj l" extending therefrom. A"

hanger 154-eXtends downwardly from the 'reciprocatingframe and its'lower ein d pertion is adj ustably and pivotally connected to an arm 155'extending from a rock shaft- 156.

cesses 148 formed longitudinallylwithin thesides of a frame 149 mountedforvertical rerolls. Guardgplates 15.0 and 151 are attachedto the frame 1 15andare spaced apart attheir adjoining ends, so thatas the creased tube is directfid outwardlyfr in between the rolls 137jand 1-39 it will pass between these ends of' the plates 1,50 and 151,, The re ciproc atin g frame 149'is provided at its top with a guard plate 152 and the bottom of the frame which has been indicated at 153,

7 from the sprocket to asproclret 135 secured to the shaft 136 :of a 'crea'singroll 137. This shaft engagingthe bar 161 and additional clamp ing bolts are similarly engaged with the bo ttom sections -1621at the other ends thereof and serve to clamp said bottom sections to a leaf 166 hinged to the member 153. Thus it will be scenthat'the I to: any desired. width so that its'tlanges or sidewalls 163 WlllfllCtlOilfilLY engagetlre side-edges of. the folded-tube directed .into

*the'trough; It is to be'understood that the' trough, the side flanges 'or walls of which. converge upwardly slightly can be of any desired len gth.

Obvious iywhen the mechanism is working tl1e frame-1 19 will be reclprocated vertical ly.- Thus, as a flattened tube isfed from between the creasing rolls 137'and 139 the projectingend portion thereof will be. en-- gaged by the adjacent; ends of the walls or flanges 163 and directed upwardly into the frame 149, as shown in Figure 36, so as to come against the top of said. frame ora'gainst the guard plate 152, as shown in Figure 37. Then as the frame 149 moves downwardly it will thrust against the upstanding portion I ofthe tube, as shown in Figure 38, and push downwardly-within the frame that portion ofthe tube delivered from between the. creasin; rolls,.as shown in Figure 39. The frame 149 when again moved upwardly comes against the lower folds-of the tube, as shown in Figure 40, and again press the tube upwardly so that the tube will thus be formed into a Zigzag fold, as shown in Figure 41, the side edges of the tube. frictionally engaging the wallsvor flanges 163 of the trough. 'As

trough produced by thetwoaflangedl members can'beadjusted the trough mores upwardly: and downwardly with the frame the package formed by'the folded tube will be received by-the trough. and will be fed therealong, said package in its folded position being delivered ultimately from the outlet end of the trough. The zig zag foldingof the paper-tube is facilitated by the formation of the creases in opposite faces-successively of the tube; these creases being produced by the ribs .140. and the groove 1-11 carried by the rolls 137 and 139. A package such as produced by the operation above described is illustrated in Figure" 35; Such a package is also shown in the course of formation in Figures 42. and 43.

inwardly extending points'169 which nor mally engage the channeled guide fingers below the inclined portlons of the fingers.

A guide plate 170 extends up to the inclined [port-ions of the fingers and serves to present a straight edge along which the tube "will I be cut as hereinafter explained.

ably and pivotally connected to an arm 171 'pivotally connected to the frame as indi- The lower ends of the rods 168 are adjust cated at 172. This armein turn, is connected by a depending rod 173 to a lever 17 i fulcrumed as at 175 between its ends. That end of the lever 174 remote from the rod 173 is connected by a spring 176 to the table 77: 1and has a channeled strip 177 pivotally connected to'it. The upper portion of this strip 177 rests'upon the hub 178 of a gear 179 and on this hub is mounted a projecting lug 180 adapted, during the rotation of the hub and gear, to move against an abutment 181' secured in the channels in strip 177. A spring 182 connects the lower portion of the strip 177to the table 77 so as to press the upper portion of the strip 177 against 7 the hub 178.

A disk 181 rotates with the sprocket 135 if and has a series of laterally extending pins 182 one or more of which can be removed. These pins duringthe rotation of the disk 181 engage the gear 179 so as to rotate it slowly and as this gear is rotated the ear or ro'ection 180 raduall moves against P t: Y r.

V abutment 181 and slowly forces the strip f 177 downwardly against'the action of thesprings 176 and 182. Lever 17 1 is thus gradually raised so as to thrust upwardly against lever 171 and cause the rods 168 to move upwardly along the lncllned portions of the guide fingers 167. Thus'the points 169 will be moved past the sides of the paper tube and will then be deflected inwardly so that the point's 169 will overhang the side portions of the tube. elevated to this position the proper length of tube will have been measured oil and the ear or projection 180 will move out of en gagement with the abutment 181. Consequently the springs 176 and 182' will return the'va-rious parts to their initial positions. This will result in the rods 168 being v snapped downwardly at a high speedmausing wvould otherwise, demand. the tube is partially cut in the manner clenated. Just as the points are he points 169 to tear through the side por tions of the tube and to then swing apart against the fingers 167 as shown in. Figure 29. The creasing rolls'137, and 139 are de cooperation withrolls 109 and 116, will pull the entire paperweb throughout the length of the machine over and between the formers and between the compressing rolls. In view of the slip connection'between the sprocket 133 and its shaft the creasing rolls will at no time rotate as rapidly as the shaft 128 However, when scribed, the pulling action exerted by the creasing. rolls will be suliicient to rupture the tube between the two side cuts with the result that the tube will be severed in the predetermined lengths andthe entire length "then directed in its folded condition along the trough followed by another length. properly folded in the manner hereinbeforepointed out. When the points 169 are snapped downwardly they'work along and- 7 past the st-raight'edge 170 which serves to support the tube duringthe severing opera- 7 tion.

If desired a roll 18% located adjacent the pass between the creasing rolls 137 and139.

In order to prevent retrograde movement of the creasing rolls and of the gear 179, a dog 185 is slidably engaged by the teeth thegear 179 during the actuation of said gear in the manner hereinbefore described, the dog being held in engagement with the teeth by a sprin 186. Additional springs 187 and 18S maybe connected to thehanger 154- and to the table for. facilitating the reciprocation of the frame 149.

Importance is attached to the fact that during the peration of the machine the'-paper web after being passed through the machine will be pulled throughout the length of the machine by the action of the clamping rolls'109 and 116 and by the creasing rolls 1:37am 139. By reason of the peculiar configuration of the various formers,

the paper web will be properly folded. Any of the folds can be eliminated if desired so that the resultant tube can either be provided with the series of folds shown in Figure 3% or with some of said folds elimi- The machine can be operated at a very high speed because of the absence of any reciprocating parts other than the cut ting mechanismjwhich operates comparatively slowly. It is to be understood that if,

preferred any other suitable form of cutting means such as rotary cutters can. be:

utilized in lieufof the cuttin have been described. H

l aper'tubes 1n 'difi'erent widths can 0t g points that signed to move at such a speed that they, in- 4' guide plate '183 may be inter posed between thestraight edge and a guide course bemade by changing thesizes of the formers and by proper adjustment of the various parts of the machine. w Asan added feature a gong 189;may be arranged to be sounded each time the paper tubeis severed. This gong can be sounded :by a rod. 190 connectedto an arm19l which moveswith-the' lever 17 4. Thus each time the lever .moves' downwardlyduring the severing of the paper tube-the, rod 190 will also move downwardly and strike-the '1 VVhile the machineherein descr bed isespeciallyadapted for use in:- making paper tubes adapted for use in "the formationof blasting cartridges, thesaid tubes being adj ustable in transverse area, itiis'to beun'derstood that the machine, by making certain modificationsiin the shape jof'the formers,

can also be used for making other kinds of tubes, such as papertubesto-be out or torn in lengths for makin -paper;bagsand other packagingstructures;

What is cl-a1medis:

In ajmachine of the class gdescribeda;

stationary former, grnejans for -;supporting for rotation a rolled paper web, means for drawing the-web longitudinally along the former to shape the. w eb into a flat tube, meansfor transversely creasing the fiattube:

at. regular intervals inopposite'sides sucsessively ,a member for' receiving the tube as creased, i and I means for reciprocating saidmember for. engagement with the outer faces 1 of the bends or creased portions successively,

thereby. to fold the'creasecl tube ;into zigzag form-to package or .bunch7' the. tube.

V 2. In a machine ofzthe' class described a. stationary former, meansfor supporting for rotation a-rol-led 'papenweb, means for drawing the weblongitudinally along the V former :t shape-theweb into a flat tube,

means for transversely creasing the flat tube at regular intervals -1n opposite sides successively, a member for receiving-the tube as. creased, and means for reciprocating-saidmember for engagement with the outer faces of the bends orcreasedportions suc' ,cessively,' thereby to fold, the creased-tube- 7 into zigzag form t package or bunch the tube, and means'for severing the tube to form pa'ckages or .bunches of uniform size. v I V 3. Ina machine of the class described the '3 combination with a stationary former strip,

of means for drawing a paper web along with the outer faces ofthe bend or creased portions successively, thereby to fold the tube inzigzag form and. feed .it longitudinally dition. l

a. In a machine of the class described ;a former strip, means for drawing a web lon gitudinally along the strip to produce a fiat tube, .means' for creasing the tube transverselyat regular intervals in opposite sides successively, at delivering member having spaced. friction portions, a member for receiving the tube as creased, and means for reciprocating. said. member for engage ment with the outer faces of the bonds or creased portions successively, thereby to fold the creased tube into zigzag form and thrust it between and in frictional engagement with the friction portions;

5. In aamachine of the class described a former strip, means for drawinga web longltudlnally along the strip to produce a fiat tube, .means. for creasing; the tube transversely at regular intervals in opposite sides successively, a delivering member having spaced frlctlon portions, a member for re ceiving the tube as creased, and-means for reciprocating said member for engagement With the outer faces ofthe'bends or creased portlons successively, thereby to fold the creased'tube intozigzag formand-thrust it, between and in frlctlonal engagement with the friction portions, and-means for severe ing' the tube into predetermined [lengths 6. In a machine of the class described the combination with aformer strip, of means for'continuously moving a web of paper along .the former strip to shape the web into a flat tube, continuously operating means forpressing the tubeand creasing the same transversely at regular intervals in'opposite sides successively, a delivering structure, a

member for receiving the tube as creased, and means for reciprocating said member for engagement with the outerfaces of the bends or creased portions successively, therebyto fold the tube at the creases into Zigzag form and direct the folded tube into the delivering structure, and means for severing the tube vat*predetermined intervals during its movement through the machine.

7 In a machineof the class described the combination with cooperating. former strips,

offmeans for continuously drawing-a web of paper. a-longsaid strips to shape'the web into av flat tube, formerxstrips for slidable engagement by the flat tube for folding the sides of thetube longitudinally, .means for along the trough in itsvfoldedcon-.

creasing the-longitudinally folded tube at predetermined intervals and in opposite sides. successively, sa1dcreases extending transversely of the tube, a, member for re-- .ceivlngrthe tube as creased, and means for reciprocating *SfllCl member for engagement withtheouter faces of the bends orcreased portions successively, thereby to fold the tube at thecreases into zigzag form to pack agethe tube. y

8. In a machine of the class described the combination with a stationary former strip,

of means for drawing a web longitudinally along the strip to; fold' the web longitudinally, cooperating superposed former strips,

for receivingthe movingweb therebetween to fold one of the edges of the folded web back into lapped relation with the other longitudinal 'edge of the web thereby to form a flat tube, means slidably engaged by the opposite side portions of the flat tube for turning said side portions inwardly;longitudinally of the} tube, means for traneyersely creasing the folded flat tube at predetermined intervals'and in opposite sides successively, a member forreceiving the tube as ycreased, and means for reciprocating said member forengagement with the outer faces of thebends or creased portions successively, thereby to fold the tube along the transverse creases into zigzag form to package'the tube.

9. In a machine of the class described the combination with a stationary former strip,

ofmeans for drawing a web longitudinally along-the strip to fold the web longitudi- 'nally cooperatingsuperposed former strips for receiving the moving web therebetween to fold one "of the edges of-the folded webf back into lapped relation with the other longitudinal edge of the web thereby to form a flat tube, means slidably engaged by the opposite side portions of the flat tube for turning said side portions inwardly, longitudinally of the tube,- means for transversely creasing the folded flat tube at predetermined intervals and in opposite sides successively, a-member for receiving the tube as creased, and means for reciprocating said member for engagement with the outer 7 determined sizes.

faces of the bends or creasedportions successively, thereby to fold the tube along the transverse creases into zigzag form to package the tube, and means operating in timed relation with the creasing means for.

severing the tube to form packages of prelOQIn a machine of the class describcd the combination with a former strip, of

.m eansfordrawing a paper web along the i strip to form a flat tube, superposed creasing rolls having notching ribs and grooves for successively creasing the tube transversely in opposite sides respectively, a delivery trough adjustable in transverse area,

a member for receiving the tube as creased, and means for reciprocating said member for engagement with the outer faces of the bends or creased portions successively, thereby to fold the tube at the transverse creases into zigzag form and direct said folded tube into the trough, and means for severing the tube into predetermined lengths, said means operating in timed relation to the creasing rolls.

11. In a machine of the class described the combination with former strips, of means for drawing a paper web along the strips to shape said web into a fiat tubefcombined 7 pressing and creasmg rolls for engaging the tube and creasing it transversely in op I posite sides successively, a member mounted for reciprocation in a plane intersecting the plane of-movement of the creased tube, "a guard plate and a trough carried by said member for successively engaging the outer surfaces of the creased portions of the tube.

to fold said tubealong the creases into zigzag form, said creasing rolls constituting means for directing the folded creased tube into the trough to package the tube.

12. In amachine' of the class described the combination with a former strip and means for drawing apaper web along the strip to form a flat'tube, of means for creasing the tube transversely in opposite sides successively, a tube receiving trough, and means for reciprocating the trough to fold the tube at thecreases into zigzag form and receive the folded tube.

1 3. In a machine of the class described the combination with a former strip and means for drawing a paper Web along the strip to form a flat tube, ofmeans for creasfriction surfaces, aguard extending" from and movable with the frame and overhang- 'ing the trough, spaced stationary guards, and combined feeding'an'd creasing rolls for directing a formed tube between the stationary guards and against the trough, and

means for reciprocating the movable frame to'bring the trough and the guardon said frame successively into engagement with the outer faces of the bends or creased portions of the tube when fed between the stationary guards, thereby'to shape the creased tubes into zigzag form and package the tube in the trough. V

15. Thecombination with a frame mount ed for reclprocation, a trough movable with one end portion of the frame, and a guard 'movable with the opposite end of the frame, of combined feed ng and creasing rolls, and

means for actuating said" rolls to feed a ing the tube transversely in opposite sides" creased tube into the frame in timed relation to the reciprocation thereof Where-by 

